Board Thread:General Discussion/@comment-26931879-20160708070043/@comment-25233866-20160712151722

The Hiker in Mt. Igneus offers the most SpA EVs at the moment, so it's technically a hotspot for SpA.

However, the Flower Patch in Route 10 is definitely the best way to get SpD EVs, due to the high concentration of Pokemon that offer SpD EVs (Spoink, Floette, and Hoppip). Lastly, the Tall Grass in Rosecove is the best way to get HP EVs, since Slowpoke and Shellos are more common and can be easily encountered.

I don't think we need to wait until there are trainers of each EV to help people out with EV Training and we can always update it to include trainers that offer these EVs.